CVE-2017-12133

NameCVE-2017-12133
DescriptionThe DNS stub resolver in the GNU C Library (glibc) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attackers due to IP fragmentation.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs870648

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
eglibc (PTS)wheezy2.13-38+deb7u10vulnerable
wheezy (security)2.13-38+deb7u12vulnerable
glibc (PTS)jessie (security), jessie2.19-18+deb8u10vulnerable
stretch (security), stretch2.24-11+deb9u1vulnerable
buster2.25-3fixed
sid2.25-4fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
eglibcsource(unstable)(unfixed)medium
glibcsource(unstable)2.24-15medium870648

Notes

[stretch] - glibc <no-dsa> (Minor issue)
[jessie] - glibc <no-dsa> (Minor issue)
[wheezy] - eglibc <no-dsa> (Minor issue)
issue introduced by fix for CVE-2016-4429
https://sourceware.org/bugzilla/show_bug.cgi?id=21115
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d42eed4a044e5e10dfb885cf9891c2518a72a491

Search for package or bug name: Reporting problems